Vulnerability · NVD

CVE-2026-6727

CVE-2026-6727 : medium severity (CVSS 5.9). No tracked catalog app is linked to this CVE.

Severity (CVSS): 5.9
Exploitation: 0.2 %
Tracked apps: 0
Still exposed: 0

Published on 2026-08-11

A timing side-channel vulnerability exists in the RSA OAEP decryption implementation. A privileged local attacker with access to the TPM command interface may be able to exploit timing differences to recover information that could allow decryption of ciphertexts encrypted to TPM-managed RSA keys, including the RSA Endorsement Key (EK), including import blobs, credential blobs, and session salts. Under certain conditions, this may also enable the forgery of TPM 2.0 attestations. Refer to TCGVRT0011.

Attack vector : Local No privileges required No user interaction

Show raw CVSS vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

EPSS 0.15% exploit very unlikely percentile 3.7%

OS versions that fix this CVE

This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.

Windows Server 2025 Fixed in 10.0.26100.33296
Windows Server 2022 Fixed in 10.0.20348.5499
Windows Server 2019 Fixed in 10.0.17763.9121
Windows 11 26H1 · 2026-H1 Fixed in 10.0.28000.2704
Windows 11 25H2 · 2025-H2 Fixed in 10.0.26200.9168
Windows 11 24H2 · 2024-H2 Fixed in 10.0.26100.9168
Windows 11 23H2 · 2023-H2 Fixed in 10.0.22631.7517
Windows 10 22H2 · 2022-H2 Fixed in 10.0.19045.7663
Windows 10 21H2 · 2021-H2 Fixed in 10.0.19044.7663
Windows 10 1809 · 2018-09 Fixed in 10.0.17763.9121
Windows 10 1607 · 2016-07 Fixed in 10.0.14393.9418

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